Fish in rock

[DaniDiver]

i got some live rock today and about a half an hour ago i discovered that there was something in it. I fiquered it out that it is a crab. It blends in with the rocks and has huge claws and has hairy legs. What type is it? Will it destroy the reef? Will it be ok in the tank?

[snorvich]

Probably not a great inhabitant but a picture would help us clarify.

[EdKruzel]

Probably a Gorilla Crab and a pest you don't want to leave in the tank. It may sound cruel, but the easiest way to rid the rock is to use a piece of rigid air tubing or wooden dowel to crush it in place.